attribute vec4 position;
attribute vec2 RGBTexCoord;
attribute vec2 alphaTexCoord;

varying vec2 RGBTexCoordVarying;
varying vec2 alphaTexCoordVarying;

void main()
{
   float preferredRotation = 3.14;
   mat4 rotationMatrix = mat4(cos(preferredRotation), -sin(preferredRotation), 0.0, 0.0,sin(preferredRotation),cos(preferredRotation), 0.0, 0.0,0.0,0.0,1.0,0.0,0.0,0.0, 0.0,1.0);
   gl_Position = rotationMatrix * position;
   RGBTexCoordVarying = RGBTexCoord;
   alphaTexCoordVarying = alphaTexCoord;
}

